"The Big Bang Theory" The Hofstadter Isotope (TV Episode 2009) - IMDb
This episode marks Stuart's first appearance. Unlike his later seasons where he is portrayed as increasingly pathetic and sickly, he is initially shown as confident, talented, and a genuine romantic rival for Leonard. [S2E20] The Hofstadter Isotope
David Goetsch, Richard Rosenstock, and Steven Molaro. "The Big Bang Theory" The Hofstadter Isotope (TV